title: Ultra-low-cost clinical pulse oximetry.
abstract: An ultra-low-cost pulse oximeter is presented that interfaces a conventional clinical finger sensor with a mobile phone through the headset jack audio interface. All signal processing is performed using the audio subsystem of the phone. In a preliminary volunteer study in a hypoxia chamber, we compared the oxygen saturation obtained with the audio pulse oximeter against a commercially available (and FDA approved) reference pulse oximeter (Nonin Xpod). Good agreement was found between the outputs of the two devices.
authors.forename: Christian L
authors.initials: CL
authors.lastname: Petersen
authors.forename: Heng
authors.initials: H
authors.lastname: Gan
authors.forename: Martin J
authors.initials: MJ
authors.lastname: MacInnis
authors.forename: Guy A
authors.initials: GA
authors.lastname: Dumont
authors.forename: J Mark
authors.initials: JM
authors.lastname: Ansermino
mesh_terms: D016477:Artifacts; D002138:Calibration; D040421:Cell Phone; D004867:Equipment Design; D005385:Fingers; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis*; D009038:Motion; D010092:Oximetry / Q000191:economics / Q000295:instrumentation*; D010100:Oxygen / Q000737:chemistry; D010477:Perfusion; D012815:Signal Processing, Computer-Assisted
chemical_list: D010100:Oxygen